Difference between revisions of "KPP Run"
Jump to navigation
Jump to search
(16 intermediate revisions by 3 users not shown) | |||
Line 11: | Line 11: | ||
<br><br> | <br><br> | ||
− | ===[https://wiki.jlab.org/clas12-run/images/ | + | ===[https://wiki.jlab.org/clas12-run/images/e/e2/Offline_-shift-schedule.pdf Off-line shift schedule]=== |
+ | |||
+ | <br><br> | ||
+ | ===[https://wiki.jlab.org/clas12-run/images/8/80/HallB_KPP_Demo_data-3.pdf CLAS12 KPP Demonstration Slides]=== | ||
| valign=top | | | valign=top | | ||
Line 40: | Line 43: | ||
| valign=top | | | valign=top | | ||
+ | |||
===JLab Logbooks=== | ===JLab Logbooks=== | ||
<font size=3> | <font size=3> | ||
Line 64: | Line 68: | ||
''' Beam energy 6.4 GeV (3 pass) '''<br> | ''' Beam energy 6.4 GeV (3 pass) '''<br> | ||
''' Important: Document all your work in the logbook! '''<br> | ''' Important: Document all your work in the logbook! '''<br> | ||
+ | == <font color=red>''' Very Successfull Run '''</font>== | ||
<!--<font size=3>[https://bluejeans.com/573852742 Bluejeans for Run Meetings on Thursdays and Fridays at 2pm]</font></center>--> | <!--<font size=3>[https://bluejeans.com/573852742 Bluejeans for Run Meetings on Thursdays and Fridays at 2pm]</font></center>--> | ||
</center> | </center> | ||
Line 83: | Line 88: | ||
*Beam current <b> 5 nA </b> (use Faraday Cup) | *Beam current <b> 5 nA </b> (use Faraday Cup) | ||
*Beam positons on 2H01 nA BPM <b> x=0.38, y=0.905 </b> | *Beam positons on 2H01 nA BPM <b> x=0.38, y=0.905 </b> | ||
− | *CODA configuration - <b> FC_DC </b> | + | *CODA configuration - <b> SECTOR2_SVT (sector2 trigger with SVT) <del>SECTOR2 (sector2 only trigger), FC_DC (6-sectors)</del></b> |
*Triger file - <b> trigger/kpp1.trg </b> | *Triger file - <b> trigger/kpp1.trg </b> | ||
*Take data, 2 hours a run | *Take data, 2 hours a run | ||
Line 94: | Line 99: | ||
# <del>Study tracking efficiency: four HV setings: 8, 9, 10, 11, 12, for each HV four threshold settings: 30, 45, 60, 75. 10 min runs each.</del> | # <del>Study tracking efficiency: four HV setings: 8, 9, 10, 11, 12, for each HV four threshold settings: 30, 45, 60, 75. 10 min runs each.</del> | ||
# <del>Continue with data taking torus at -1900 A, target at 13.125, DC HV setting #11, thresholds 45 mV </del> | # <del>Continue with data taking torus at -1900 A, target at 13.125, DC HV setting #11, thresholds 45 mV </del> | ||
− | # Switch target (call RC) and continue data taking till Sunday morning | + | # <del> Switch target (call RC) and continue data taking till Sunday morning </del> |
− | # Change torus polarity | + | # <del>Change torus polarity. While torus current is changing, perform harp scans and FSD studies (see below)</del> |
− | # (Sunday morning while torus setting gets changed) Perform beam studies (call RC and beamline, <b> Turn off DC HV </b>): | + | # <del>(Sunday morning while torus setting gets changed) Perform beam studies (call RC and beamline, <b> Turn off DC HV </b>):</del> done |
− | #*Do harp scans - 2C21, "tagger", and 2H01 | + | #*<del>Do harp scans - 2C21, "tagger", and 2H01 </del> |
− | #*Test FSD system, run Struck scaler with 300um dwel time, ask MCC to set FSD trip time integration times for FSD channels (1 old and 3 new) to 1 ms. Un-mask one FSD channel, run collimator with slmall steps to left or right untill it will intercept beam tails. It will raise rates on halo counters. | + | #*<del>Test FSD system, run Struck scaler with 300um dwel time, ask MCC to set FSD trip time integration times for FSD channels (1 old and 3 new) to 1 ms. Un-mask one FSD channel, run collimator with slmall steps to left or right untill it will intercept beam tails. It will raise rates on halo counters. </del> |
− | # | + | # <del>Take one 30 min run with torus at zero </del> done |
− | # Switch to 6-sector trigger, take data till Monday morning. | + | # Set torus +1900 A, continue data taking, trigger Sector-2 only, high threshold in EC-in (5000 fADC counts) |
− | # <b> Run ends | + | #* <del>take one run for 3 hours at low luminosity. Move beam in vertical direction up (or down does not matter) with 0.1 mm steps untill rates on downstream counters will be ~5kHz</del>done. x10 lower rates on downstream halo couters (luminosity monitor) |
+ | # <del> Take short ~1 hour, random trigger data (Sergei should be in to set it up). Should happen before goimg to 6-sector trigger ~9 pm </del> | ||
+ | # Switch to 6-sector trigger (some time ~11pm), take data till Monday morning. | ||
+ | # <b> Run ends 6:45 am on Monday. Following has to be done: | ||
+ | #* End the run, turn OFF HVs for all detectors, Start Ramping torus down to zero | ||
+ | #* Retract the target using 2H01 expert GUI, just put -10 in the left "MoveAbs" and hit the return. Motor will go towards 0, and will hit "Lo Limit" limit switch | ||
+ | #* Ask MCC to change beam current to 50nA with small steps, this is to calibrate SLM (data goes to MYA, but you can record beam current and the SLM reading if you want) | ||
+ | #* When finished, got to 50nA, ask MCC to terminate the beam and take the Hall to restricted access. | ||
+ | #* When torus reaches to 0 turn the PS OFF.</b> | ||
<!-- | <!-- | ||
== The Hall was closed and brought to controlled access at 8pm on Thursday, February 2 == | == The Hall was closed and brought to controlled access at 8pm on Thursday, February 2 == |
Revision as of 09:18, 21 June 2017
[edit]
|
|
- Note, all non-JLab numbers must be dialed with an area code. When calling from a counting-house landline, dial "9" first.
- To call JLab phones from outside the lab, all 4-digit numbers must be preceded by 757-269
- Click Here to edit Phone Numbers. Note, you then also have to edit the current page to force a refresh.
Click Here to edit Phone Numbers. Note, you then also have to edit this page to force a refresh.
CLAS12 KPP run, February 3 to March 3
Beam energy 6.4 GeV (3 pass)
Important: Document all your work in the logbook!
Very Successfull Run
RC: Stepan Stepanyan
- (757) 575-7540
- 9 575 7540 from Counting Room
PDL: Eugene Pasyuk
- (757) 876-1789
- 9 876-1789 from Counting Room
Run Plan for February 4-5, 2017 :
Plan:
Important Notes:
|
General Instructions:Locking up the hall
Establishing Acceptable Beam Conditions:
Setting up the FSD threshold
hpsrun@clonpc11> /home/hpsrun/scripts/FSD/Calc_FSD_Threshold.exe
|
Every Shift:
|
Every Run:
|
---|
Webcams |
Manuals |
Epics on the web
|